An admiral, captain, and commander, all different, are to be chosen from a group of 10 starfleet officers. how many different choices of officers are possible if (a) there are no restrictions? (b) worf and troi will not serve together?  (c) picard and riker will serve together or not at all? (d) wesley must be an officer? (e) data will serve only if he is admiral?

the simplified form is

step-by-step explanation:

we want to simplify the expression,

let us change the middle bar to a normal division sign to obtain,

we multiply the first fraction by the reciprocal of the second fraction to obtain,

we factor to obtain,

we cancel the common factors to get,

we simplify to get,

the correct answer is b

0.50 , 0.75

step-by-step explanation:

mujhko hui na